Automatic train-stopping device.



GOOD STOPPING DEVICE.

PatentedSept. 3,1918.

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D. D. GOOD.

AUTOMATIC TRAIN STOPPING DEVICE.

APPLICATION FILED MAY v 19H.

Patented Sept. 3, 1918.

5 SHEETS-SHEET 2- D. D. GOOD.

AUTOMATIC TRAIN STOPPING 'DEVICE.

APPLICATION FILED MAY 19|4.

1 ,27'?,569, Patented Sept. 3, 19181;

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D. D. GOOD.

AUTOMATIC TRAIN STOPPING DEVICE. APPLICATION FILED MAYI, I914.

1 ,277,569. Patented Sept. 3, 1918..

5 SHEETS-SHEEf 4. 3V 1 D. D. GOOD.

Agnommc TRAIN STOPPING DEVICE. APPLICATION FILED MAY I. 19H.

1,27,569@ Patented Sept. 3,1918

5 SHEETS-SHEET 5 -9' 80 M so 82, H EVH n H mm H n n n m min n n n L4 uin v :r \\]l 85 V U i u u U u U u Ivmwfldr DAVID D. GOOD, 0FPHILADELPHIA, PENNSYLVANIA.

AUTOMATIC TRAIN-STOPPING DEVICE.

Specification of Letters Patent.

Patented Sept. 3, 1918.

Application filed May 1, 1914. Serial No. 835,652.

To all whom it may concern:

Be it known that I, DAVID D. G001), a citizen of the United States,residing at #6203 Jefferson street, in the city of Philadelphia andState of Pennsylvania, have invented certain new and useful Improvementsin Automatic Train- Stopping Devices, of which the following is aspecification, reference being had therein to the accompanying draw-111g.

My invention has relation to automatic train stopping devices whereinthe stopping of a locomotive, trolley car, or other vehicle running onrails, is automatically effected by'means of an obstruction locatedadjacent to the track and coacting with the signal system and mechanismon the vehicle to stop the latter independently of the engineer,motorman or Signalman.

My invention has for its object the pro vision-of a novel train stoppingdevice which is set automatically, by a passing train to stop a trainfollowing, and by means of a coacting signal system to prevent a trainpassing a danger signal.

My invention consists in the novel contruc'tions, combinations andarrangements of parts hereinafter described.

Throughout the accompanying drawing similar figures indicate similarparts.

Figure 1, represents a broken side eleVation of an engine equipped witha power and brake controlling device adapted to be operated by anautomatic, tripping device. Toward the rear of the locomotive is shown ashoe which in turn operates an automatic tripping device.

Fig. 2, is a perspective view of the auto .matic tripping deviceconstituting part of my improvement showing it in relative position tothe track.

Fig. 3, is a side elevation of the movable parts of the automatictripping device with the housing removed.

Fig. 4, is a top plan view of the mechanism shown in Fig. 2, omittingthe electric latches shown in the latter figure.

Fig. 5, is a perspective view of the parts which form the shuttle bar.

Fig. 6, is an end elevation of the mechanism shown in Fig. 3, theelectric latches being omitted.

Fig. 7, is a perspective view of the rocking shaft and its members shownin Figs. 3 and 4.

Fig. 8, is a perspective view of the oscillating plate and its membersshown in Figs. 3 and 4.

Fig. 9 represents a top View of the track, the magnets in relativeposition and the electric circuits.

Fig. 10 is a horizontal view of a portion of the shuttle bar showingmeans of connecting it to the rod controlling semaphore or switch. InFig. 1, #1 is a controlling valve on the forward part of an engineoperative by my automatic tripping device. 2 is a shoe attached to therearward part of the locomotive frame at 3. A knuckle joint is providedat 4 which allows the shoe to swing forward as the engine backs over thetrip.

Fig. 2, shows the automatic tripping device with its housing attached tothe ties at 5; the oscillating plate 6, in its normal position so placedand constructed that it will be turned downward by the shoe 2; the armmember 7, of the rocking shaft; the stop 8, in a position to actuate thevalve and stop the next train; the shuttle bar 9, adapted to beconnected to the rods which operate the signal systems; the housingcover 10 forming one of the journal covers.

Hereinafter, for the sake of brevity, the entire mechanism will bereferred to as the trip and each portion of the mechanism will be knownby the name by which it is first designated.

The rocker shaft is composed of the shaft proper 11, carrying thecollars 1213 and 14 which serve toform the bearing portions 16 and 22and to prevent horizontal motion in the journals (the latter being apart of the housing) the arm 7 on collar 14. which carries the stop 8;the plate 17 with its curved slot 18; and teeth 19 and 20 and therectilinear post 21, all being permanently attached to each other.

Oscillating plate 6 has a split sleeve 30 that embraces the shaft 11 andis adapted to turn on the shaft 11 011 the bearing portion 23 formed bythe collars 12 and 15; a cylindrical lug 26 extending laterally fromplate 6 being adapted to move in the curved slot 18 and actuate therocker shaft when the oscillating plate 6 is depressed by the shoe ,onthe moving train; a web 27 formed integral with plate 6 serves tostrengthen this lug; and a cam 28 and contact point 29 are attached tothe oscillatil'ig plate 6 by the screws 31 and 31 and are renewable whenworn.

A sustaining spring 32 is attached to plate 6 by means of the screw eyes33 and 31 screwed into the threaded holcs 35 and 36 in the lug 26 andthe post 21 and serves to sustain the oscillating plate 6 in its normalposition.

A shuttle bar 9 mounted to slide in the housing is provided at each end37 with a means of coupling it to the rods which control a signaldevice. This means of coupling consists of the two eyes 37 formed on theshuttle bar at either or both of its ends. As the semaphore in common iscontrolled by roads or draw wires "running from signal towers, it willbe seen that a branch 67 from these, as shown in Fig. 10, may beprovided with an eye 73 and attached to the shuttle bar 9 by a bolt 74,in such a manner that. when the signahnan moves the semaphore theshuttle bar will. move in unison with it and so operate the trip. Thebar slidesin bearings 38 in the housing; A fixed catch 39 protrudingfrom the edge of the bar is adapted to contact with the post 21 so thatwhen drawn forward by the signahnan it depresses the rocker plate 17raising the arm 7 and the stop 8 in position to stop the approachingtrain.

Set into the shuttle bar 9 is the pivoted latch 40, pivoted to the barby means of a bolt through the holes 11 and 4:1 41 is threaded andsmaller than 41, allowing a shoulder on the bolt. A lock nut is placedbelow the bar. In each end of the pivoted latch are curved slots 42 and412 concentric to the pivotal point of the latch. Through these curvedslots and into the threaded holes 45, step or guide bolts are screwed. Aprojection 13 on the pivoted latch is adapted to contact with the cam 28on plate 6 so that the pivoted latch is turned when the oscillatingplate 6 is depressed by the shoe on the passing train. The post 21 isthus released from the catch 14i so that therecker plate 17 may bedepressed.

A relatively flat spring 46 is attached to the shuttle bar, 9, by thetang 18 and a screw passing through the holes 17 and 47' serves to bringthe pivoted latch back to its normal position.

. A drop catch 49 is hung under the shuttle bar 9 by the rod 50 throughthe eyes 51 and is prevented from turning forward of the vertical by alug 52. The lower point 53 of catch 49 catches on the tooth 19 oftherocker plate 17 thus holding the stop in an elevated position.

The electrically operated latch for the above described trip consists ofthe catch 54:, the armature 56 and the weight 55 and is pivoted 'at 57to' the housing. The adjusting spring 58 controls the balance. Themagnet 57 ismounted on the housing and connected by the wires 59 to therails of the track which are contained in the signal block ahead of thetrip. The train while on this block and thereby closing the circuitincluding magnet 57 causes the catch 54; to register with the tooth 20and prevents the rocker shaft from moving or being moved by thesignalman to a position where another train could pass.

The electrically operated safety catch is composed of the weight 60, thecircular armature 61, the tooth 62 (which is adapted to enter the notch'65 in shuttle bar 9) and the magnet 63. The wires 63 are connected toand in circuit with the source of the signal current. Should the currentof the signal circuit fail, the safety catch will lock the shuttle barso that the signalman' cannot allow a train to pass. i

Referring to Fig. 9,-57 is the magnet operating the electric latch andis shown connected in series with batteries and track.

The source of signal current 76 is connected to the left hand rail bythe wire 77 and 78 at 79. The current is conducted by the rails 80 andthe bonds 81 to the point where a train may be. The wheels 82' and theshaft 83 form a connection between the rails 80 and 84:. The currentthen travels back along the right hand rail to the insulated fish plate85, from thence through the connection 86 and the wire 67 to the magnet57, thence through the wire and 59 to the source of current.

The energized magnet causes the latch 5A to engage the tooth 20 as longas a train remains on the block as described.

The arrow indicates the direction in which the trains move.

The magnet 63, which operates the safety catch is-connected in serieswith the signal lightas follows: The wire 77 coming from the source ofcurrent 76 leads to the signal lamp 69. From thence a wire 70 goes tothe magnet-63. The other terminal of the magnet 63 is connected by thewires 68 and 7 5 to the negative pole of the source of current. Thiscircuit is closed and the magnet when energized acts to hold the safetycatch released. It will be seen that a failure of the current or thelamp 69 will-cause deenergizing of the magnet and allow the {yeiggtedsafety catch 62 to lock the shuttle ar a An adjustable buffer66limitsthe downward motion of the rocker plate 17;

It will be seen that should the spring 32 break or for any reason theoscillating. plate; 6 remain in adepressed position that the extension43 on the pivoted latch will contact with the outer curved surface ofthe cam 28 and prevent the Signalman from moving the shuttle bar in away to lower the stop and allow a train to pass.

Operation.

Taking for granted that the automatic trip has been set at the properdistance from the rail and fastened to the ties by lag screws I throughthe feet of the housing 5, the shuttle bar 9 is attached to the rodscontrolling the signals or semaphores, the wires 59 from the magnet 57are connected to the rail and the wires 63 are connected in circuit withthe source of current of the signal system and all is properly adjusted.

If a tram equipped with an automatic brake and power controlling device,such as or similar to the one described in my'application for LettersPatent #719,830 filed September 11th, 1912, and with the shoe 2, shouldattempt to pass the trip when it is in the position shown in thedrawings, the valve handle 1 would be turned backward by contact withthe stop 8, the brakes would be set and the auxiliary throttle closed.

As the shoe 2 on the engine passes over and depresses the oscillatingplatev 6 no action is performed by the mechanism other than the turningof the pivoted catch 10 by the cam 28 and the return of these parts totheir normal position by the springs 32 and 416. The stop thereforeremains set against the next train to approach.

So long as the first train remains on the block, the electric latch 54will prevent any movement ofthe rocker mechanism.-

The train having passed the signal station, the Signalman will set the,danger signal. As the shuttle bar is connected with the signal system itwill be moved backward (to the right Fig. 3). The pivoted catch 44 willslip by and back of the post 21.

The train having cleared the block, the signal will be set to allow thenext train to pass and in so doing the shuttle bar will be movedforward, the catch 44 will force the post 21 with it which will causethe shaft 11 to rock forward and lower the arm 7 and the stop 8 to apoint low enough to allow the valve handle 1 on the approaching train topass over it.

As the shoe on the second train passes the trip, the oscillating plate 6is again depressed; the cam 28 releases the post 21 by turning thepivoted catch 40; the lug 26 moves to the bottom of the slot 18 and depresses or rocks the rocker plate until it reaches the adjustablebuffer, thus stop 8'is' raised to stop the next train.

When the stop reaches this raised position, the drop catch 53 registerswith the tooth 19 and holds the mechanism fixed.

If the trip is set to allow a train to pass,

the signal being white, and it is desired to set the signal at red andstop the next train and in so doing the shuttle bar is moved backward,the fixed catch 39 rocks the post 21 and raises the stop 8.

As the electric wires 63'are connected directly in circuit with thesource of the electric signal current, should said current fail, thecatch 62 will enter the slot 65 in the shuttle bar and lock themechanism which is under the control of the Signalman and prevent himfrom passing another train on to the block.

Should the spring 32 break, the oscillating plate 6 will drop and itsweight combined with the weight of the rocker plate 17 will raise thestop 8 against the next train to approach. A fracture or weakening ofthe spring 516 will make it impossible for the Signalman to pass anothertrain.

The mechanism is therefore entirely automatlc.

I claim:

1. The combination with train stopping mechanism carried on a train andautomatic tripping mechanism adapted to be permanently placed at blockor signal stations for the purpose of actuating said stopping mechanismand means for locking the said tripping mechanism in inoperativeposition, of a shoe mounted on the train, an oscillating plate actuatedthereby and connected with said tripping mechanism, a shaft on whichsaid plate is rotatably mounted, an arm on the shaft and a stop on thearm adapted to be elevated to actuate the stopping mechanism of afollowing train and means whereby the said tripping mechanism will beunlocked by the depression of the oscillating plate.

2. In an automatic train stopping device of the character described, thecombination of a suitably mounted horizontal shaft located adjacent to atrack, a stop member carried thereby and adapted, when raised, tocontact with devices on the train, a slotted rocker plate permanentlyattached to the shaft, an oscillating plate turning on said shaft, and alug projecting from said oscillating plate, said plate being adapted tobe rocked through contact of the lug with the lower end of the slot whenthe oscillating plate is moved through a greater are than that of theslot, substantially as described.

3. In an automatic tripping device, the combination of a housingattachable to the crossties of a rail road, a stop carrying shaftjournaled therein, a rocker plate attached to the shaft, a shuttle barhaving latch mechanism to engage the rocker plate and sliding in thehousing above and at right angles to the shaft, and operable means onthe shuttle bar for attaching it to the actuating element of a signal orsemaphore so that the shifting of a signal will cause the shuttle bar toslide at right angles to the shaft, substantially as described.

4. In an automatic tripping device, the combination of a stop carryingshaft, a rocker plate attached thereto, a post thereon, a shuttle baractuated by external means movable at right angles to the shaft andlatch mechanism on the shuttle bar adapted to engage the post on therocker plate and rock the shaft through an arc, substantially asdescribed.

5. In a tripping device, the combination of a rocker plate, a post onsaid rocker plate, a shaft to which said post is attached, a shuttle barand a fixed catch thereon adapted to engage the post on the rocker plateand rock the plate and shaft through an are when the shuttle bar isdrawn forward by the signal mechanism, substantially as set forth.

6. In an automatic train stopping device, the combination of a shaft, arocker plate mounted thereon and having a post, an oscillating platemounted on the shaft, means for operating the oscillating plate, apivoted latch, a shuttle bar adapted to engage the post and carryingsaid latch, and a cam on the oscillating plate adapted to depress orturn the pivoted latch and release the post from the latch mechanism onthe shuttle bar when the oscillating plate is depressed, substantiallyas described.

7. The combination in a tripping device of a shuttle bar adapted to bemoved in unison with a semaphore, latch mechanism carried thereby, arocker plate, a post thereon adapted to be engaged by the latch, aweighted drop catch pivoted to the shuttle bar and a tooth on the rockerplate so situated that when the latch mechanism is rcleased and therocker plate depressed they will engage each other and hold said platein its depressed position.

8. In an automatic train stopping device having a shuttle bar, a stopmember, a rocker arm on which said stop member is mounted Copies of thispatent maybe obtained for five cents each, by addressing the and anoscillating plate by which the rocker arm is actuated and which isprovided with a curved cam, a pivoted latch carried by said shuttle barand having an extension adapted to register with the cam in such amanner that when the shuttle bar is in one position the latch will bedepressed when the oscillating plate is turned downward and when theshuttle bar is in the opposite position the extension will come incontact with the cam and prevent the bar from being moved back to thefirst position, substantially as described.

9. In an automatic train stopping device comprising a stop carryingrocker arm adapted to be actuated by a shoe on a vehicleor a semaphoreand mounted on a shaft, the combination with a rocker plate attached tosaid shaft, a tooth on the rocker plate, a pivoted latch, adapted toengage with said tooth, an armature attached to the latch and a magnetenergized by the signal current from the rails which Will attract thearmature when a train is on the block, and cause the latch to registerwith the tooth and lock the mechanism with the stop in a raisedposition, substantially as described.

10. In a tripping device of the character described, the combination ofa shuttle bar, having a notch, a weighted pivoted catch adapted to enterthe notch, an armature thereon and a magnet mounted on the housing andconnected in series With suitable electric signal apparatus or lights,the parts being designed and adapted to operate in such a manner thatwhile the current is closed the magnet will be energized and hold thecatch free from the notch and when the circuit is broken and the magnetde'elnergized will allow the catch to lock the shuttle bar againstlateral movement.

DAVID D. Goon.

Witnesses LETITIAW. Goon, BERTI-IA M. WHITNEY.

Commissioner of Patents,

Washington, 11.0.

